Monitor your activity levels, sleep patterns, and more with Getiit Rex (3rd Generation Health band)which can record your steps, distance, pace, calories burned and active minutes, and sync its data via Bluetooth 4.0 to the getiit Smart BandWhen your phone receives calls, messages or other notifications such as from Facebook, Getiit Smart Band Rex (3rd Generation Health band)will vibrate to remind you. Simply lift your arm to view the notification icon on the display screen with caller name/ID when you receive a call. monitor your whole sleep cycle, automatically recognize the stage of sleep (deep or light sleep) via heart rate monitoring, record the data and duration of every stage accurately.durable and resistant against water splashes, sweat, cosmetics, dust and more. You don’t need to worry when doing daily routines, even when washing hands or taking a shower Support for Bluetooth 4.0 and above, Android 4.4 and above and iOS 8.0and above iOS